Safety razor



y 9, 1933. I H. J. GAISMAN 1,907,783

SAFETY RAZOR Original Filed March 12 1927 2 Sheets-Sheet 1 H M210 BYATTORNEY y 9, 1933. H. J. GAISMAN 1,907,783

SAFETY RAZOR Original Filed March 12. 1927 2 Sheets-Sheet 2 INVENTORATTORNEY Patented May 9, 1933 UNITED STATES PATENT OFFICE HENRY J'.GAISMAN, OF NEW YORK, N. Y., ASSIGNOR, BY MESNE ASSIGNMENTS, TO GILLETTESAFETY RAZOR COMPANY, OF BOSTON, MASSACHUSETTTS, A CORPO RATION OFDELAWARE SAFETY RAZOR Original application filed March 12, 1927, SerialNo.

174,790. Divided and this application filed January 23, 1930. Serial No.422,754.

This application is a division of my application Serial N 0. 174,790filed March 12, 1927, for Safety razors.

An object of my invention is to provide means to prevent the use in asafety razor of a blade not manufactured by or under the authority ofthe manufacturer of the safety razor.

I have illustrated my invention in connection with a safety razor inwhich the blades are provided with apertures, one of the objects of myinvention being to provide the blades and the razor with cooperativemeans to permit proper positioning of the blade in .15 the razor forshaving and to prevent an unauthorized blade not equipped with myimprovement from being used in the razor.

In carrying out my invention I provide a blade having apertures orimpressions in a backing on the blade or directly in the blade, whichapertures or impressions may be in the form of a designation to indicatethe manufacturer of the blade such as a trade-mark, a word or symbolwhich apertures or impressions are adapted to cooperate withcomplemental projections in or on the razor so re lated that the bladewill be retained in shaving relation to the razor guard, and whereby ifa blade not provided with such apertures or impressions be inserted inthe razor it can not be retained therein or thereon in shaving relationto the guard.

In the form of my invention illustrated in the accompanying drawings Iprovide a blade holder comprising a base or frame having a guard and ablade retaining member or cover pivotally carried thereby adapted toreceive therebetween a blade having apertures, and 40 means upon theholder cooperative with the apertures to retain the blade in shavingrelation to the guard when the retaining member or cover is inblade-retaining position and to prevent the retaining of a blade that isnot provided with a proper aperture.

My invention comprises novel details of improvement that will be morefully hereinafter set forth and then pointed out in the claims.

Reference is to be had tothe accompanying drawings forming a parthereof, wherein Fig. 1 is a section view of a safety razor embodying myinvention, showing the retaining member or cover in open position; Fig.1a is a side view of the razor in shaving position; Fig. 2 is a planview of Fig. 1, partly in section; Fig- 3 is a section substantially onthe plane of line 3, 3 in Fig. 1; Fig. 4 is a sectional detail showingthe razor in shaving position; Fig. 5 is a side view of a modified formof the razor; Fig. 6 is a sectional detail of the razor shown in Fig. 5,showing the parts in shaving position; Fig. 7 is a section substantiallyon the line 7, 7 in Fig. 6; Fig. 8 is a partly broken face view of ablade; Fig. 9 is a face view of a blank for a bladebacking, and Fig. 10is a face view illustrating a blade having the apertures formed directlytherein. Fig. 11 is a partly sectional side elevation of themodification shown in Fig. 5; Fig. 12 is a partly sectional sideelevation of the razor, in the closed position, corresponding to Fig. 6;Fig. 13 is a fraginentary detail view, and Fig. 14 is a detailperspective View.

Similar numerals or references indicate corresponding parts in theseveral views.

The razor illustrated includes a. blade holder comprising a frame orbase 1 provided with a guard 2 and a blade retainer or cover 3 pivotallycarried by the frame; The retainer or cover member 3 is shown pivotallysupported adjacent to the rear frame or base 1, for which purpose thelatter is shown pro- K vided with pivots 1" on opposite s'des, which maybe stamped from the metal 0 the frame and webs 3a of the retainer areprovided clamped upon the rear or heel portion of the blade alongopposite sides thereof in a well known way in safety razor blades. Theblade or its backing 4a is provided with openings, apertures orimpressions, indicated at 4b, which openings or the like may be providedin the form of a designation, such as a trade-mark, name, symbol or thelike. In the blank for the backing illustrated in Fig. 9 the openings orapertures 41) are so located as to be upon opposite sides of the blade,as illustrated in Fig. 8, so as to readily appear in any flatwiseposition of the blade. The openings, apertures or designations 4?) maybe {armed directly in the blade, as shown in Fig.

A handle 14 may be attached to the frame or holder 1- in any desiredway. The blade holder portion of the razor is provided with one or moreprojections, indicated at 7, adapted to enter a properly arranged orcorresponding aperture or designation 4b of the blade or its backing 4a,the projections being in such a position as to retain the blade with itscutting edge-in shaving relation to the guard when the cover or retainermember 3 is closed over the blade. There may be-any desired number ofprojections 7 and any number of corresponding apertures or impressions4b in the blade or its backing. Stops 2a, in some of the figures, areprovided upon the guard in spaced relation near the corners of thecutting edge of the blade to be engaged thereby. The openings orcut-away portions 4b of the blade present abutment shoulders at 4',between the cut-away portions and the shaving edge 4", which may beengaged by the associate projection 7 to present or press the cuttingedge of the blade in shaving relation to the guard, and against thestops 2a when they are present on the guard. A blade rest or slidemember 8 carries the projections 7 and is shown connected with orsupported by spring arms 8a attached to the blade holder frame at 10.Projections 7 are thus supported in position to receive the openings orapertures 4b of the blade. The rest 8 and the projections 7 are movabletoward and from the guard and are controlled by the cover member orretainer 3, whereby the blade may TOVG relatively to the guard. In Figs.1 to 4 tne arms 81; have a spring tendency normally pressing the rest 8and the projections 7 rearwardly or in a directionaway from the guard,the spring arms 8a being shown operable in slots 9 in frame or basel.The rest 8 is shown provided with laterally extending lugs 8' located inoppositionto the curved or camlike edges 3 of the webs 3a of the coveror retainer member 3. The relation of the parts in such that when thecover member or retainer is swung back from the blade the spring arms 8wwill cause the rest 8 and the projection or projections 7 thereon-tomove rearwardly respecting theguai-d because the cam-like edge 3 moveswith member 3 relatively to the lugs 8', and when the cover member orretainer is swung down over the blade the cam-like edges 3' actingagainst the lugs 8' will force the rest 8 forwardly, and the projections7 will enga e the shoulders or abutments 4' and push t e blade so thatthe cutting edge of the blade will be pushed forwardly in shavingrelation to the uard. The engagement of the .free edge 0 the covermember or retainer upon the adjacent edge portion of the blade inconjunction with t e projection 7 will keep the blade in shavingrelation to the guard, as indicated in Fig. 4, since the rearwardpressure of the spring arms 8a respecting the rest 8 tends to keep itsprojection 8 against the cam portions 3' of the webs 3a of the cover orretainer. If a blade or its backing that is not provided with openingsor designations 4a be applied in the blade holder it will not beretained in shaving position because it requires the cooperation of theprojections 7 in the openings or apertures 4b and the retainer upon theblade to retain a blade in shaving position. Spring arms 15 secured uponframe 1 are located in position to engage edge portions 3 of the webs 3aof the cover or retainer to keep the latter open, (Fi 1), and to engagethe edge portions 3 0 said webs to keep the retainer closed upon theblade, (Fig. 4). In the form shown in Figs. 5, 6 and 7 the spring arms8a tend to force the rest 8 with its pro ections 7 in the direction ofthe guard so that if a blade having the openings or apertures 4b thereinor in its bac ing be placed upon the rest 8 with the projections in the.appropriate openings or apertures the said projections will engage theshoulders or abutments 4 and the spring arms will move the projections 7toa ward the guard and thus cause the blade to be pushed in shavingrelation to the guard and against the stops 2a, to retain the cuttingedge of the blade in shaving relation to the guard. The retainer orcover member is pivotally supported by the pivots 1" entering the holes6' in the webs 3a and the cam-like edge portions 36 of the webs 3a areadapted to cooperate with the spring arms 8m to position the latterrearwardly when the cover or retainer memberis opened, (Fig. 5;, tocause the'rest 8, projections 7 and the b ade to be moved rearwardlywith respect to the guard. When the cover member or retainer 3 'is movedto position over the blade the edges 3b advance toward the guard topermit the spring arms 8a to correspondingly move the rest andprojection 7 toward the guard and bearin against the webs 3a of theretainer.

The e ges 3c of the webs 3a engage the ends of the spring 16, wherebythe cover or retainer member 3 is held bearing against the blade, asindicated in Fig. 6, and the extended portions of the edges 31) of thewebs 3a engage said spring to keep the retainer or cover member open, asindicated in Fig. 5.

It will be understood that the cover or retainer member 3 controls theposition of the blade that is provided with an opening or aperture toreceive a projection 7 when the said member is closed over the blade. Ineither of the forms shown, the cover member either acts through theoperation of projection 7 to push the blade to shaving position when thecover is being closed as in Figs. 1 to 4, or the cover member permitsthe spring arms 8a to push the blade to shaving position when the covermember is being closed over the blade in the form shown in Figs. 5 to 7.If a blade not being provided with openings or apertures 46 be placed inthe blade holder it will not be retained in shaving position because theprojections 7 will not cooperate with the blade to retain the latterwith this cutting edge in shaving position or with said edge against thestops 2a.

In accordance with my invention a manufacturer of the razor and theblades provided with openings or designations, such as 4b, to receivethe projections of the blade holder, will be assured that blades-notprovided with such openings or designations manufactured by anunauthorized manufacturer will not fit or be retained in a blade holder.

I use the term aperture or opening herein to include such an element inor on blade as will cooperate with the projection 7 for the purposesspecified hereinabove.

Having now described my invention what I claim is 1. A safety razorcomprising a frame having a guard, a rest movable with respect to theguard and provided with a projection to cooperate with an opening in theblade, spring means normally tending to move the rest away from theguard, a member movably car ried by the frame, and means cooperative between said member and-the rest for moving the latter toward the guardwhen the said member is being closed and to retain a blade in shavingrelation to the guard.

2. A safety razor as set forth in claim 1 in which the means cooperativebetween the member and the rest includes cam-like portions on the membercooperative with the rest for moving the latter toward the guard andpermitting the spring means to move the rest in a direction away fromthe guard when the member is opened.

3. A safety razor including a holder hav ing a guard, a blade in saidholder, said blade havingcut-awayportionsdisposed rearwardly of itsshaving edge and presenting abutment shoulders, said holder beingprovided with a movable cover member, and means movable with respect tothe guard and adapted to engage the abutment shoulders of the blade,said means being resiliently and movably supported on the holder, incombination with coacting camming elements on said cover and saidmovable means to control said movable means, whereby the shaving edge ofthe blade may be retained in shaving position While the cover is closed.

4. A safety razor comprising a blade holder having a guard, a blade onsaid holder, a movable member connected to the holder and operative overthe blade, said blade having an opening and a shaving edge, movablemeans mounted on said holder and having a projection engaging the bladewithin said opening in combination with co-acting camming means on saidmovable member and said movable means to control the position of theblade with reference to the guard, whereby the shaving edge of the bladewill be maintained in shaving relation to the guard while the movablemember is in engagement with the blade.

5. A safety razor comprising a blade holder having a guard, a bladehaving an opening, a movable blade retaining member pivoted to saidholder, camming means on said retaining member, a blade rest resilientlyand movably supported on said holder and located to the rear of theguard but in substantial alignment therewith, said rest having aprojection engaging the opening of the blade, said rest also having camengaging portions in contacting engagement with the camming means of theretaining member, said guard having blade stops on the ends to engagethe blade at the ends of its cutting edge.

6. A safety razor including a holder having a guard, in combination witha blade having an opening, and retaining means on said holder to retainthe blade on the guard. spring supported movable means on said holderengaging the opening in the blade, in further combination with co-actingcamming means on said retainer and movable means for controlling themovable blade-engaging means, said guard having blade stops engag in theblade at the ends of its shaving edge.

A safety razor, including a holder having a guard with blade stops, anda blade having an opening and a shaving edge, a blade rest resilientlymounted on said holder and normally urged toward said stops, said resthaving a projection engaging the blade opening, a cap member pivotallymounted on said holder, said member having cam means engaging portionsof said rest to draw said rest and blade away from said blade stops whensaid cap member is opened.

HENRY J. GAISMAN.

